Mich. Admin. Code R. 408.40212 - Triangle wall bracing system
Rule 212.
(1) A
triangle wall bracing system shall consist of all of the following elements
assembled as shown in figure 3:
(a) Scaffold
grade lumber that is suitable for planking.
(i) A 16-foot, 2-inch by 10-inch vertical
brace.
(ii) A 16-foot, 2-inch by
10-inch diagonal brace.
(iii) A
16-foot, 2-inch by 10-inch horizontal brace.
(b) Two nominal 2 x 4 wood
stiffeners.
(c) Top wall
anchor.
(d) Base of wall or footing
anchor.
(e) Bearing
block.
(f) Cleats.
(2) The angle of intersection of
the diagonal brace and the horizontal brace shall be between 35 and 45 degrees.
The diagonal brace shall not intersect the vertical brace below the midpoint
height of the masonry wall.
(3) The
triangle wall bracing system shall be aligned on both sides of the wall when
installed.
(4) The maximum
horizontal spacing for a triangle wall bracing system shall not exceed the
values as shown in table 4 for the corresponding maximum wall heights and as
illustrated in figure 4.
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TABLE 4(1)
INTERMEDIATE PERIOD (GREATER THAN 24 HOURS)
Maximum Horizontal Spacina for the Trianale Wall Bracing System for Resisting 40 mph Wind
| Nominal Thickness | Maximum Horizontal Spacing | Maximum Wall Height | Maximum Panel Width(2)(3) |
| 4" | 9'-1" | 16' | 16'-0" |
| 6" | 13'-6" | 16' | 24'-0" |
| 8" | 17'-11" | 16' | 32'-0" |
| 10" | 20'-10" | 16' | 38'-0" |
| 12" | 23'-6" | 16' | 42'-8" |
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Notes
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